From 6d8f9b0273e2edfbbf5fedc5dbc5c2c427a3e3e9 Mon Sep 17 00:00:00 2001 From: Paul Kehrer Date: Tue, 8 Apr 2014 09:17:02 -0500 Subject: add SEED CFB/OFB bespoke vectors and documentation --- .../development/custom-vectors/seed/verify_seed.py | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 docs/development/custom-vectors/seed/verify_seed.py (limited to 'docs/development/custom-vectors/seed/verify_seed.py') diff --git a/docs/development/custom-vectors/seed/verify_seed.py b/docs/development/custom-vectors/seed/verify_seed.py new file mode 100644 index 00000000..e626428c --- /dev/null +++ b/docs/development/custom-vectors/seed/verify_seed.py @@ -0,0 +1,35 @@ +import binascii + +import botan + +from tests.utils import load_nist_vectors + + +def encrypt(mode, key, iv, plaintext): + encryptor = botan.Cipher("SEED/{0}/NoPadding".format(mode), "encrypt", + binascii.unhexlify(key)) + + cipher_text = encryptor.cipher(binascii.unhexlify(plaintext), + binascii.unhexlify(iv)) + return binascii.hexlify(cipher_text) + + +def verify_vectors(mode, filename): + with open(filename, "r") as f: + vector_file = f.read().splitlines() + + vectors = load_nist_vectors(vector_file) + for vector in vectors: + ct = encrypt( + mode, + vector["key"], + vector["iv"], + vector["plaintext"] + ) + assert ct == vector["ciphertext"] + + +ofb_path = "vectors/cryptography_vectors/ciphers/SEED/seed-ofb.txt" +verify_vectors("OFB", ofb_path) +cfb_path = "vectors/cryptography_vectors/ciphers/SEED/seed-cfb.txt" +verify_vectors("CFB", cfb_path) -- cgit v1.2.3